The Messenger (Gabriel Allon Series #6)

Gabriel Allon, art restorer and spy, is about to face the greatest challenge of his life.

Allon is recovering from his grueling showdown with a Palestinian master terrorist, when terrorism comes to find him once again. An al-Qaeda suspect is killed in London, and photographs are found on his computer—photographs that lead Israeli intelligence to suspect that al-Qaeda is planning one of its most audacious attacks ever, straight at the heart of the Vatican.

Allon warns his old frien…